diff --git a/lib/tempest b/lib/tempest
index 59c5bbcbfb..1f775ba2ae 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -354,7 +354,7 @@ function configure_tempest {
     fi
 
     if [ $TEMPEST_VOLUME_DRIVER != "default" ]; then
-        iniset $TEMPEST_CONFIG volume vendor_name $TEMPEST_VOLUME_VENDOR
+        iniset $TEMPEST_CONFIG volume vendor_name "$TEMPEST_VOLUME_VENDOR"
         iniset $TEMPEST_CONFIG volume storage_protocol $TEMPEST_STORAGE_PROTOCOL
     fi